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Across
- 5. The slow process of living things changing over many years
- 6. Facts and information collected from experiments
- 7. The wearing away of land by water, wind, or ice
Down
- 1. Carefully watching and noting what happens
- 2. A substance made of two or more elements bonded together
- 3. The force that slows things down when they rub together
- 4. The molecule inside cells that carries instructions for life